blocks|key|1626958|text|请参阅示例listview和advanced+list+view。在开发具有多选选项的组合框时，它们可能会对您有所帮助|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1626959|entityMap|0|LINK|mutability|MUTABLE|url|http://www.sencha.com/examples/explorer.html#checkboxlistview|1|http://www.sencha.com/examples/explorer.html#advancedlistview^0|5|8|0|E|I|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

Refer the examples <a href="http://www.sencha.com/examples/explorer.html#checkboxlistview" rel="nofollow">listview</a> and <a href="http://www.sencha.com/examples/explorer.html#advancedlistview" rel="nofollow">advanced list view</a>. They may be of some help to you in developing combobox with multi select option

blocks|key|610595|text|感谢@smiletolead的指导，我通过将对话框与CheckBoxListView和TriggerField类集成在一起找到了解决方案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|610596|完整的代码清单是..|610597|++++package+com.ui.test.client;

++++import+java.util.List;

++++import+com.extjs.gxt.ui.client.data.ModelData;
++++import+com.extjs.gxt.ui.client.event.ComponentEvent;
++++import+com.extjs.gxt.ui.client.event.WindowEvent;
++++import+com.extjs.gxt.ui.client.event.WindowListener;
++++import+com.extjs.gxt.ui.client.store.ListStore;
++++import+com.extjs.gxt.ui.client.widget.CheckBoxListView;
++++import+com.extjs.gxt.ui.client.widget.Dialog;
++++import+com.extjs.gxt.ui.client.widget.form.TriggerField;
++++import+com.extjs.gxt.ui.client.widget.layout.FillLayout;
++++import+com.google.gwt.user.client.Element;

++++public+class+MultiSelectComboBox+extends+TriggerField+{

++++++++private+Dialog+checkBoxListHolder;
++++++++private+CheckBoxListView+listView;
++++++++private+ListStore+store;

++++++++private+String+delimiter+=+",";
++++++++private+boolean+readOnly;


++++++++public+MultiSelectComboBox()+{
++++++++++++store+=+new+ListStore();
++++++++++++listView+=+new+CheckBoxListView();
++++++++}




++++++++@Override
++++++++protected+void+onTriggerClick(ComponentEvent+ce)+{
++++++++++++super.onTriggerClick(ce);
++++++++++++if(readOnly)+{
++++++++++++++++return;
++++++++++++}
++++++++++++checkBoxListHolder.setSize(getWidth(),+200);
++++++++++++listView.setWidth(getWidth());
++++++++++++checkBoxListHolder.setPosition(getAbsoluteLeft(),+
++++++++++++++++++++getAbsoluteTop()+%2B+getHeight());
++++++++++++if(checkBoxListHolder.isVisible())+{
++++++++++++++++checkBoxListHolder.hide();
++++++++++++}
++++++++++++else+{
++++++++++++++++checkBoxListHolder.show();
++++++++++++}
++++++++}




++++++++@Override
++++++++protected+void+onRender(Element+target,+int+index)+{
++++++++++++super.onRender(target,+index);

++++++++++++checkBoxListHolder+=+new+Dialog();
++++++++++++checkBoxListHolder.setClosable(false);
++++++++++++checkBoxListHolder.setHeaderVisible(false);
++++++++++++checkBoxListHolder.setFooter(false);
++++++++++++checkBoxListHolder.setFrame(false);
++++++++++++checkBoxListHolder.setResizable(false);
++++++++++++checkBoxListHolder.setAutoHide(false);
++++++++++++checkBoxListHolder.getButtonBar().setVisible(false);
++++++++++++checkBoxListHolder.setLayout(new+FillLayout());
++++++++++++checkBoxListHolder.add(listView);
++++++++++++listView.setStore(store);

++++++++++++checkBoxListHolder.addWindowListener(new+WindowListener(){

++++++++++++++++@Override
++++++++++++++++public+void+windowHide(WindowEvent+we)+{
++++++++++++++++++++setValue(parseCheckedValues(listView));
++++++++++++++++}

++++++++++++});

++++++++}




++++++++private+String+parseCheckedValues(CheckBoxListView+checkBoxView)+{
++++++++++++StringBuffer+buf+=+new+StringBuffer();
++++++++++++if(checkBoxView+!=+null)+{
++++++++++++++++List+selected+=+checkBoxView.getChecked();
++++++++++++++++int+index+=+1,+len+=+selected.size();
++++++++++++++++for(D+c+:+selected)+{
++++++++++++++++++++buf.append(c.get(listView.getDisplayProperty()));
++++++++++++++++++++if(index++getListView()+{
++++++++++++return+listView;
++++++++}

++++++++public+void+setListView(CheckBoxListView+listView)+{
++++++++++++this.listView+=+listView;
++++++++}

++++++++public+ListStore+getStore()+{
++++++++++++return+store;
++++++++}

++++++++public+void+setStore(ListStore+store)+{
++++++++++++this.store+=+store;
++++++++}

++++++++public+String+getDelimiter()+{
++++++++++++return+delimiter;
++++++++}

++++++++public+void+setDelimiter(String+delimiter)+{
++++++++++++this.delimiter+=+delimiter;
++++++++}

++++++++public+boolean+isReadOnly()+{
++++++++++++return+readOnly;
++++++++}

++++++++public+void+setReadOnly(boolean+readOnly)+{
++++++++++++this.readOnly+=+readOnly;
++++++++}


++++}|code-block|syntax|javascript|610598|代码已经在这里解释过了。http://bhat86.blogspot.com/2012/02/gxt-comobobox-with-multi-select-feature.html|offset|length|610599|谢谢!|610600|entityMap|0|LINK|mutability|MUTABLE|url|http://bhat86.blogspot.com/2012/02/gxt-comobobox-with-multi-select-feature.html^0|0|0|0|C|27|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@$K|10|L|11|1|12]]|A|$]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

Thanks @smiletolead for your guidance, I found a solution by integrating Dialog with CheckBoxListView and TriggerField class.

The complete code listing is..

<pre><code>

 package com.ui.test.client;

 import java.util.List;

 import com.extjs.gxt.ui.client.data.ModelData;
 import com.extjs.gxt.ui.client.event.ComponentEvent;
 import com.extjs.gxt.ui.client.event.WindowEvent;
 import com.extjs.gxt.ui.client.event.WindowListener;
 import com.extjs.gxt.ui.client.store.ListStore;
 import com.extjs.gxt.ui.client.widget.CheckBoxListView;
 import com.extjs.gxt.ui.client.widget.Dialog;
 import com.extjs.gxt.ui.client.widget.form.TriggerField;
 import com.extjs.gxt.ui.client.widget.layout.FillLayout;
 import com.google.gwt.user.client.Element;

 public class MultiSelectComboBox extends TriggerField {

 private Dialog checkBoxListHolder;
 private CheckBoxListView listView;
 private ListStore store;

 private String delimiter = ",";
 private boolean readOnly;


 public MultiSelectComboBox() {
 store = new ListStore();
 listView = new CheckBoxListView();
 }




 @Override
 protected void onTriggerClick(ComponentEvent ce) {
 super.onTriggerClick(ce);
 if(readOnly) {
 return;
 }
 checkBoxListHolder.setSize(getWidth(), 200);
 listView.setWidth(getWidth());
 checkBoxListHolder.setPosition(getAbsoluteLeft(), 
 getAbsoluteTop() + getHeight());
 if(checkBoxListHolder.isVisible()) {
 checkBoxListHolder.hide();
 }
 else {
 checkBoxListHolder.show();
 }
 }




 @Override
 protected void onRender(Element target, int index) {
 super.onRender(target, index);

 checkBoxListHolder = new Dialog();
 checkBoxListHolder.setClosable(false);
 checkBoxListHolder.setHeaderVisible(false);
 checkBoxListHolder.setFooter(false);
 checkBoxListHolder.setFrame(false);
 checkBoxListHolder.setResizable(false);
 checkBoxListHolder.setAutoHide(false);
 checkBoxListHolder.getButtonBar().setVisible(false);
 checkBoxListHolder.setLayout(new FillLayout());
 checkBoxListHolder.add(listView);
 listView.setStore(store);

 checkBoxListHolder.addWindowListener(new WindowListener(){

 @Override
 public void windowHide(WindowEvent we) {
 setValue(parseCheckedValues(listView));
 }

 });

 }




 private String parseCheckedValues(CheckBoxListView checkBoxView) {
 StringBuffer buf = new StringBuffer();
 if(checkBoxView != null) {
 List selected = checkBoxView.getChecked();
 int index = 1, len = selected.size();
 for(D c : selected) {
 buf.append(c.get(listView.getDisplayProperty()));
 if(index getListView() {
 return listView;
 }

 public void setListView(CheckBoxListView listView) {
 this.listView = listView;
 }

 public ListStore getStore() {
 return store;
 }

 public void setStore(ListStore store) {
 this.store = store;
 }

 public String getDelimiter() {
 return delimiter;
 }

 public void setDelimiter(String delimiter) {
 this.delimiter = delimiter;
 }

 public boolean isReadOnly() {
 return readOnly;
 }

 public void setReadOnly(boolean readOnly) {
 this.readOnly = readOnly;
 }


 }

</code></pre>

The code has been explained here...
<a href="http://bhat86.blogspot.com/2012/02/gxt-comobobox-with-multi-select-feature.html">http://bhat86.blogspot.com/2012/02/gxt-comobobox-with-multi-select-feature.html</a>

Thank you!

I have a task to design a control of size ComboBox (GXT) with Multi-select feature. I tried to set CheckBoxListView using setView of ComboBox but did not seemed to work. Can anybody please guide me if there is any way using the GXT framework I can achieve this?

PS: I found a component called XComboBox in sencha forum (java class, source code) which works good, but cant be used as its under GNU GPL License 

Thanks in advance!

GXT - ComoboBox with Multi select feature

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我的任务是设计一个具有多选功能的size ComboBox (GXT)控件。我尝试使用ComboBox的setView设置CheckBoxListView，但似乎不起作用。如果有任何使用GXT框架的方法可以实现这一点，有谁可以指导我吗？PS:我在sencha论坛(java类，源代码)中发现了一个名为XComboBox的...

问具有多选特性的GXT - ComoboBox
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